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product information colorful waterproof luminous alarm electronic watch boy teenager children watch multi-function outdoor sports watch dial diameter: about 45mm dial thickness: about 15mm waterproof: 30 meters life waterproof function: colorful luminous, week display, alarm, chronograph, month display, calendar ps: 100% of the upgraded version has passed the 3 pa test of the waterproof machine, and the strap material is tpu, the ordinary version strap is pvc, and the life is waterpr